First Access to Droplet : Always Reset Root Password?

Hey,

After creating fresh droplets,

1. With DO Console, I always have to reset the ROOT password first to get to the console. Is this the way it has to be?

2. i have SSH used when creating droplets (loaded in Settings:Security and stored in my keychain in ~/.ssh/), but i still get the error below:

The authenticity of host '10xxxxxx' can't be established.
ECDSA key fingerprint is SHA256:Caotgn3CEP+xwD5efdF5RuDpHRuCgJYP8JNeDTPkX0k.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added '10xxxxxx' (ECDSA) to the list of known hosts.
root@10xxxxxx: Permission denied (publickey).

which I find strange, since: both keys are in my mentioned keychain AND the key is RSA and not ECDSA.

At least I manage to connect to the droplet by starting with resetting the root password, but I find it strange.

Is this a known bug or am I doing something wrong?

Thanks a lot!